Chinti & Parker

Debut: 2009, but the London-based brand, which had been available in the states only on net-a-porter, just arrived in its first brick-and-mortar stores in America this spring.

Back story: British cousins Anna Singh and Rachael Wood are behind the line of sumptuous t-shirts, cozy knits and easy sundresses. Says Anna, "we’re all about the beauty of simplicity—classics with a modern twist."

Green Cred: The duo uses materials like jersey made from Bamboo and Seacell as well as locally- sourced cashmere. (Bonus: Each garment comes packaged in its own organic cotton envelope.)

H&M Conscious Collection

Debut: Arrived in stores April 14th

Back story: The fast-fashion retailer, which has announced plans to exclusively use cotton that is sustainable by 2020, is beginning its environmental initiative this season with the launch of its eco-friendly label.

Green Cred: Pieces are made from organic linen and cotton, recycled polyester and Tencel.

Giulietta

Debut: Bowed at NYFW in February.

Back story: Italian-born designer Sofia Sizzi—who earned her stripes at Gucci, Calvin Klein and Donna Karan—has stepped out on her own with a line of retro-chic sheath dresses, pencil skirts and blouses inspired by classic films like The Godfather.

Green Cred: The vegetarian designer (who also makes her own shoes and jewelry) refuses to use leather, opting instead for silk and velvet.

Price Point: Yet to be determined, though Sizzi has confirmed it will be in the luxury bracket.

Standout Piece: Black sheath dress with Peter Pan collar

Where to get it: Too early to tell, though Sizzi has plans to open Giulietta boutiques in her native Florence and New York later this year.

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ASOS Green Room

Debut: 2006, relaunch spring 2011

Back story: Green Room, ASOS’s eco and socially-conscious division, is celebrating its five year anniversary with several special collections, including a tres chic capsule collaboration with A.P.C. designer Jessica Ogden.

Green Cred: Varies between labels, with pro-planet practices running the gamut from the use of organic cotton to sourcing production to underdeveloped countries (like Ogden’s line, which was manufactured in Kenya).

Price Point: Also varies between labels, though almost all items are under $100.

Swedish Hasbeens for H&M

Back story: Footwear line Swedish Hasbeens, a fave among clog-loving hipsters, has teamed up with H&M to produce a one-off selection of groovy platform sandals and wedges.

Green Cred: Made with wood and vegetable-tanned leather and each piece is, for the most part, hand-crafted. (Machines are involved in less than 20 percent of the production process.)

Price Point: $60-$70

Standout Piece: Ankle strap sandal in red ($60)

Where to get it: Select H&M locations

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Pure Threads

Debut: Last month.

Back story: After partnering with British fair trade clothing retailer People Tree last year, the seemingly indefatigable Emma Watson got to work on her second green clothing venture, a 5-piece capsule consists of hippie-chic springtime separates with Alberta Ferretti.

Green Cred: Contains organic fabrics such as hemp, cotton poplin and cotton muslin (and part of the proceeds will benefit People Tree).

Seven New Eco-Friendly Labels

Stella McCartney was just the beginning: In honor of Earth Day, we've rounded up the most notable new additions to fashion's ever-growing green scene. (Printed online to save trees, thank you very much).